- h323plus - lists.packetizer.com

H.239 support in h323plus
by Simon Horne 02 Nov '07

02 Nov '07

H.239 support is now available in h323plus. I have updated simple in the application directory of the CVS to provide a sample application. You can place a call and press 'S' to start a fake application video window and 'E' to end it. You will need the latest CVS version of the H.263 video plugin to for it to work. You can get it from the opalVoIP repository or there is a mirror in the extensions/plugins directory in the h323plus CVS. Simon ----------------------- Simon Horne Principal Maintainer h323plus library www.h323plus.org h323:s.horne@packetizer.com

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h323plus v1.19.6 (Linux) Release
by Simon Horne 02 Nov '07

02 Nov '07

Guys An update has been release to fix a few issues with GnuGk http://www.h323plus.org/source/download/h323plus-v1_19_6-src.tar.gz The main download page should be updated shortly with the new link. Thanks to Jan Willamowius (GnuGk) is assisting resolving the issues and getting the release out. Simon ----------------------- Simon Horne Principal Maintainer h323plus library www.h323plus.org h323:s.horne@packetizer.com

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Socket aggregation not yet implemented on Unix?
by Vlasis Hatzistavrou (KTI) 02 Nov '07

02 Nov '07

Hello, I have tried to compile H323Plus with Signaling and RTP aggregation, so I assumed that I needed to compile PTLib with socket aggregation first using "./configure --enable-sockagg" However, during the PTLib compilation I receive the message: "aggregation not yet implemented on Unix" Is there any ETA about this feature? Also, is this feature fully available on Windows? -- Best regards, Vlasis Hatzistavrou.

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Re: [h323plus] [Openh323-devel] help in creating WhiteBoard application using Opal
by Simon Horne 30 Oct '07

30 Oct '07

FYI opal is now opalVoIP and openH323 is continuing on as H323plus. OpenH323 (the project "in general" is no longer being actively developed. T.120 support in Opal is at the same level it as it is in OpenH323 very very basic. There is a project on sourceforge which has been abandoned for many many years based on OpenH323. http://sourceforge.net/projects/opent120/ T.120 development in general has pretty much stopped for various reasons including NAT issues. It uses TCP and you cannot easily use STUN, H.460.18/19 or emerging NAT technologies like P2Pnat to traverse NATs. That does not mean T.120 development has ceased. In h323plus www.h323plus.org we have added H.239 support or extended video to perform the same operation as T.120 app/whiteboarding would perform except over UDP so it can traverse NATs. It utilises the existing video plugin codecs to create a secondary video channel for the purpose of App Sharing. This work is continuing with the addition of app sharing controls such as H.249 collaberaton controls (remote userinputs, mouse movements and keystrokes). T.124 or Generic conference controls has also been resurrected and is being tunnelled through H.245 to perform "next generation" remote MCU control functionality such as Inviting and ejecting participants, Floor and chair controls and eventually the ability to introduce H.239 apps directly into conferences as presentations. If anyone would like to participate and/or contribute to this work then please let me know. Simon -----Original Message----- From: openh323-devel-bounces(a)lists.sourceforge.net [mailto:openh323-devel-bounces@lists.sourceforge.net]On Behalf Of Vishak V. Kurup Sent: Monday, 29 October 2007 3:08 PM To: openh323-devel(a)lists.sourceforge.net Subject: [Openh323-devel] help in creating WhiteBoard application using Opal Hi, I am Vishak. I want to develop a white board application for linux using gtk. I heard that whiteboard applications use T.120 protocol. T.120 protocol is in the stack of Opal. So can any one please tell me how create a whiteboard application. Regards

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Re: [h323plus] [Openh323-devel] opalvoip vs h323plus
by Hugo Pereira 28 Oct '07

28 Oct '07

Greetings, I have just read the history post about OPAL. I was already very impressed about the work of Craig and Robert. now i am even more! :) Spite In that text OPAL seens to be the successor of openh323, now this last has reemerged in the form of h323plus. - Does this new and enhanced protocol stack is is better? - What are the advantages/disadvantages of using one or another? - Are now these projects competing with each other? These are a few questions that question the existence of both projects simultaneously.

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opalvoip vs h323plus
by Hugo Pereira 27 Oct '07

27 Oct '07

Greetings, OpenH323 has branched into two distinct projects: opalvoip and h323plus. However each of these projects are best? Both of their based protocols (H323 and SIP) is well known in he videoconference worldwide. Because opalvoip supports both SIP and H323 i could point this project better than h323plus. Am i right? Best regards, Hugo Pereira

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HD Video support in H323plus
by Simon Horne 27 Oct '07

27 Oct '07

Just a quick note: H323 plus now supports HD video. The necessary changes have been made in the ptlib library. Simon ----------------------- Simon Horne Principal Maintainer h323plus library www.h323plus.org h323:s.horne@packetizer.com

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Using H323+ for Asterisk's chan_h323
by Vlasis Hatzistavrou (KTI) 25 Oct '07

25 Oct '07

Hello all, I have been trying to compile chan_h323 with H323. It seems that I am almost done, although I get the following error: g++ -DNDEBUG -I../../include -include ../../include/asterisk/autoconfig.h -fPIC -DP_USE_PRAGMA -D_REENTRANT -fno-exceptions -Wall -fPIC -DPIC -DNDEBUG -I/Downloads/h323p/ptlib_v1_12_0/include -DPTRACING -I/Downloads/h323p/h323plus/include -Os -pipe -felide-constructors -Wreorder -c ast_h323.cxx -o ast_h323.o ast_h323.cxx: In destructor `virtual MyProcess::~MyProcess()': ast_h323.cxx:194: error: `timerChangePipe' was not declared in this scope make[2]: *** [ast_h323.o] Error 1 make[1]: *** [h323/libchanh323.a] Error 2 make: *** [channels] Error 2 I went through the PWLib 1.12.0, and there is no occurrence of "timerChangePipe". In previous versions of PWLib "timerChangePipe" was used in quite a few places in the code. I googled it, but I still don't know what it does. If I comment it out in the destructor MyProcess::~MyProcess() it compiles, but the channel driver segfaults as soon as it is loaded... -- Best regards, Vlasis Hatzistavrou.

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H323Plus 1.19.5 released
by Simon Horne 24 Oct '07

24 Oct '07

To All Just a quick note the first H323Plus development release is now available for download H323Plus 1.19.5 can be downloaded from http://www.h323plus.org/source/ or http://sourceforge.net/project/showfiles.php?group_id=194599 Pwlib 1.12 is also available (mirror of openH323 release) Audio/Video Plugins (Mirror of OpalVoIP release) The number system will be a continuation of the OpenH323 number system with 1.20 being the first stable release. Special OpenH323 Transition Notes: Video is now plugins so you will need to remove references to the existing H.261 and H.263 libraries and all codecs are now loaded via AddAllCapabilities() Check you video input and output device code functions correctly as there are some improvements in ptlib which might affect the video display. Only H.261 & H.263 are supported with this release. H.264,MPEG4 are to come. DirectShow for Windows is not supported (yet) for VS 2003 & VS 2005. Of course you can direct your questions to the H323Plus mailing list. Simon

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Regarding increasing the call capacity of H323plus
by Vlasis Hatzistavrou (KTI) 24 Oct '07

24 Oct '07

Hello, A couple of years ago the following paper was written by Craig Southeren about increasing the call capacity of OpenH323 & OPAL: http://www.voxgratia.org/docs/call%20thread%20handling%20model%201.0.pdf We could see in the release milestones of OpenH323 at: http://www.voxgratia.org/docs/milestones.html#milestones that signaling and RTP aggregation was intended for OpenH323 v1.19.0 (Titan). I'm sorry if this question has been answered before or if the answer if obvious, but I wanted to know if these enhancements are there in the current release candidate of H323plus. I tried to look through relevant mailing lists (even the older Openh323 mailing lists) but I couldn't find any useful information. If this is the case I intend to use H323plus to replace the older OpenH323 libraries in a couple of open source projects, like Asterisk etc. -- Best regards, Vlasis Hatzistavrou.

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